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59 lines
1.1 KiB
Fortran
59 lines
1.1 KiB
Fortran
! File: psb_dcsmv.f90
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! Subroutine:
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! Parameters:
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subroutine psb_dcsmv(alpha,a,b,beta,c,info,trans)
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use psb_spmat_type
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implicit none
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type(psb_dspmat_type) :: a
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real(kind(1.d0)) :: alpha, beta, b(:), c(:)
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integer :: info
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character, optional :: trans
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real(kind(1.d0)), allocatable :: work(:)
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character :: trans_
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integer :: iwsz,m,n,k,lb,lc, err_act
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character(len=20) :: name, ch_err
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name='psb_dcsmv'
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info = 0
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call psb_erractionsave(err_act)
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if (present(trans)) then
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trans_ = trans
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else
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trans_ = 'N'
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endif
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if (trans_=='N') then
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m = a%m
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k = a%k
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else
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k = a%m
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m = a%k
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end if
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n = 1
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lb = size(b,1)
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lc = size(c,1)
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iwsz = 2*m*n
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allocate(work(iwsz))
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call dcsmm(trans_,m,n,k,alpha,&
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& a%pl,a%fida,a%descra,a%aspk,a%ia1,a%ia2,a%infoa,a%pr,&
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& b,lb,beta,c,lc,work,iwsz,info)
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deallocate(work)
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call psb_erractionrestore(err_act)
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if(info.ne.0) then
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if (err_act.eq.act_abort) then
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call psb_error()
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return
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end if
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end if
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return
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end subroutine psb_dcsmv
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